1,1,3,3-Tetramethylguanidine
CAS 80-70-6
EC 201-302-7
Formula C5H13N3
MW 115.18 g/mol
Amines Plastics & PolymersCoatings, Adhesives, Sealants & Elastomers CatalysispH Regulation & Buffering
Description
1,1,3,3-Tetramethylguanidine (TMG, CAS 80-70-6) is a strong, non-nucleophilic organic base supplied as a liquid under trade names including PC-CAT TMG and Polycat 201. It carries no E-code designation and is classified under HS code 29252000 within the amines category.
In polyurethane foam production, TMG acts as a tertiary amine catalyst that accelerates the gelling and blowing reactions by activating isocyanate groups. In coatings and adhesive formulations, it functions as a pH regulator and curing promoter, driving crosslinking reactions at controlled rates without introducing nucleophilic side reactions that could compromise film integrity.
TMG is available in standard liquid grades and is subject to REACH registration requirements for supply within the EU. Procurement quantities typically range from drum to IBC formats. Buyers should request a current Safety Data Sheet and confirm supplier REACH compliance documentation prior to ordering.
In polyurethane foam production, TMG acts as a tertiary amine catalyst that accelerates the gelling and blowing reactions by activating isocyanate groups. In coatings and adhesive formulations, it functions as a pH regulator and curing promoter, driving crosslinking reactions at controlled rates without introducing nucleophilic side reactions that could compromise film integrity.
TMG is available in standard liquid grades and is subject to REACH registration requirements for supply within the EU. Procurement quantities typically range from drum to IBC formats. Buyers should request a current Safety Data Sheet and confirm supplier REACH compliance documentation prior to ordering.
Physical Properties
| Melting Point | -30 °C |
| Boiling Point | 160 °C |
| Density | 0.91 g/cm³ @ Temp: 25 °C |
| Flash Point | 140 °F |
| Appearance | Liquid |
| Color | APHA: ≤150 |
| Odor | mild ammoniacal odor |
| Form | Liquid |
| Water Solubility | miscible |
| Vapor Pressure | 0.2 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.469 |
| pH | 12.7 (10g/l, H2O, 25℃) |
| Log P | -0.49 at 20℃ |
Trade & Regulatory
| HS Code | 29252000 |
| UN Number | 2920 |
| ADR Class | 8 |
| Packing Group | II |
| WGK (Germany) | 1 |
Other Names
PC-CAT TMGPolycat 201TetramethylguanidineTETRAMETHYL GUANIDINEN,N’-TetramethylguanidineN,N,N',N'-TETRAMETHYLGUANIDINEN,N,N′,N′-Tetramethylguanidinen,n,n’,n’-tetramethyl-guanidin
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